Emerson Tescom ER5000 Series - Page 166

ER5000 —
166
The ERTune™ Program: Basic Features
Delta
Initiates a step setpoint change by the value entered in the Delta
Amount entry eld. The value entered in the Delta Amount entry eld
can be positive or negative.
The Delta command can be used together with the Loop
command as a programming shortcut to move the setpoint to a
target level through a series of smaller setpoint step changes.
In the Prole below, segments 3 through 5 combine to increase
pressure from 50 psig to 70 psig over four loops and segments 6
through 8 return the pressure to 50 psig over four loops.
Change Variable
Sets the value of an internal variable of the ER5000, selected
from the Variable drop-down list, to the value entered in the Value
entry eld.
Refer to the Internal Variables section for a table listing all of the
ER5000’s internal variables, as well as detailed information about
the settings for the most commonly used variables.